alt text

I have a simple .NET Core Console Application

We can now make a single .EXE runnable Console Application file in .NET Core 3

Whooooo!!!

alt text

Here is my Open Source project which looks in your current directory and opens up the .sln file in Visual Studio. It is a tool I use every day for the last few years

Lets bring it up to the latest version of .NET Core 3.1 and just have a single .exe file to distribute. (handy check to see what version of .NET Core you’ve got installed dotnet --version)

Single File Executable

From MS Docs if you run the following command you’ll get a single exe.

dotnet publish -c Release -r win10-x64 -p:PublishSingleFile=true

alt text

Wow this is a large exe for essentially a very simple app, lets make it smaller:

Assembly Linking to make smaller

Assembly linking docs - add in PublishedTrimmed

<PropertyGroup>
  <OutputType>Exe</OutputType>
  <RuntimeIdentifiers>win10-x64</RuntimeIdentifiers>
  <TargetFramework>netcoreapp3.1</TargetFramework>
  <AssemblyName>d</AssemblyName>
  <PublishTrimmed>true</PublishTrimmed>
</PropertyGroup>

Lets run publish again and see if the trimmed exe is smaller:

dotnet publish -c Release -r win10-x64 -p:PublishSingleFile=true

alt text

Better!

Scott Hanselman has a good post on this but I couldn’t get it working as he did with all config in the .csproj file.

Conclusion

It makes me very happy to be able to distribute a single .exe again for my console apps.